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57f5d52a 1#include "cache.h"
d807c4a0 2#include "exec-cmd.h"
1a600b75 3#include "attr.h"
3f2e2297 4
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5/*
6 * Many parts of Git have subprograms communicate via pipe, expect the
7 * upstream of a pipe to die with SIGPIPE when the downstream of a
8 * pipe does not need to read all that is written. Some third-party
9 * programs that ignore or block SIGPIPE for their own reason forget
10 * to restore SIGPIPE handling to the default before spawning Git and
11 * break this carefully orchestrated machinery.
12 *
13 * Restore the way SIGPIPE is handled to default, which is what we
14 * expect.
15 */
16static void restore_sigpipe_to_default(void)
17{
18 sigset_t unblock;
19
20 sigemptyset(&unblock);
21 sigaddset(&unblock, SIGPIPE);
22 sigprocmask(SIG_UNBLOCK, &unblock, NULL);
23 signal(SIGPIPE, SIG_DFL);
24}
25
08aade70 26int main(int argc, const char **argv)
3f2e2297 27{
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28 /*
29 * Always open file descriptors 0/1/2 to avoid clobbering files
30 * in die(). It also avoids messing up when the pipes are dup'ed
31 * onto stdin/stdout/stderr in the child processes we spawn.
32 */
33 sanitize_stdfds();
34
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35 git_resolve_executable_dir(argv[0]);
36
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37 git_setup_gettext();
38
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39 initialize_the_repository();
40
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41 attr_start();
42
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43 restore_sigpipe_to_default();
44
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45 return cmd_main(argc, argv);
46}